From: Jeff Garzik <jgarzik@pobox.com>
To: Andreas Herrmann <AHERRMAN@de.ibm.com>
Cc: linux-scsi@vger.kernel.org
Subject: Re: [Patch] dont block device on QUEUE_FULL for last command
Date: Mon, 4 Aug 2003 11:48:44 -0400 [thread overview]
Message-ID: <20030804154844.GB26775@gtf.org> (raw)
In-Reply-To: <OF122C5E1B.D9D616EB-ONC1256D78.0050C1BC@de.ibm.com>
On Mon, Aug 04, 2003 at 05:42:51PM +0200, Andreas Herrmann wrote:
> Hi,
>
> I observed the following problem:
> A device was marked as blocked after a QUEUE_FULL status code
> was returned for the last scsi command for a device.
> And there's a snag to it -- because no further commands are pending
> for that device, the device is not set unblocked anymore.
>
> Solution is:
> Do not block the device/adapter if getting QUEUE_FULL status code
> for the last pending command of that device/adapter, but retry
> the command.
For most cases you _should_ block until another command is completed, at
the very least. Retrying the command immediately is _exactly_ the
situation one wishes to avoid, when returning a QUEUE_FULL result!
Jeff
next prev parent reply other threads:[~2003-08-04 15:48 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-04 15:42 [Patch] dont block device on QUEUE_FULL for last command Andreas Herrmann
2003-08-04 15:48 ` Jeff Garzik [this message]
2003-08-05 6:07 ` Jens Axboe
2003-08-11 8:45 ` Kurt Garloff
2003-08-04 16:05 ` James Bottomley
-- strict thread matches above, loose matches on Subject: below --
2003-08-05 7:15 Andreas Herrmann
2003-08-05 7:26 Andreas Herrmann
2003-08-05 13:08 ` Jeff Garzik
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